Feel free to downvote me but honestly? I’d rather the refs have these powers.

Make it like rugby. Mic up the refs and don’t take any dissent whatsoever.

Only the captain speaks directly to ref, with permission.

Players surrounding the ref? Yellows for all.

Being stroppy over a decision? Yellow.

Manager going off at ref? Send them away.

Watch how fast the manchildren learn to control their behaviour